Question 7 — IGCSE 0580 March 2025 Paper 42
Cambridge IGCSE Mathematics 0580, Extended tier, calculator. Topic: Statistics · Scatter diagrams. Worth 5 marks.
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Question text
7 The table shows the age and mass of each of 10 babies.
Age (weeks) 9 12 15 2 5 6 9 7 1 11
Mass (kg) 4.3 5.8 6.2 3.0 3.9 4.0 4.6 4.5 2.5 5.3
(a)
7
6
5
Mass (kg) 4
3
2
1
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Age (weeks)
Complete the scatter diagram.
The first six points have been plotted for you. [2]
(b) What type of correlation is shown in the scatter diagram?
................................................. [1]
(c) On the scatter diagram, draw a line of best fit. [1]
(d) Use your line of best fit to find an estimate of the mass of a 14-week old baby.
............................................ kg [1]
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